Hi i have a Samsun Galaxy S4 GT-i9505 unlocked. I cracked the screen and decided to buy a replacement glass. During the replacement unfortuneately the digitizer cracked. I bought a new oem screen but now the touch doesn't work. I tried factory reset it with recovery but didn't help. I tried installing a different firmware by odin but it didn't help neither. I took a working galaxy s4 and i put the motherboard from the working one into the replacement screen and it was working fine. I put my motherboard into the working s4 screen and the screen didnt even turn on when i turned on the phone.